A series of direct shear tests has been performed on a dense well-graded sand. All tests were performed on 3.00-in. diameter, 1.25 in. tall cylindrical samples, and were run slowly enough to produce drained conditions. The results of these tests are summarized in the following table: Test Number Normal Load (lb) Shear Load at Failure (lb) 1 100 84 2 200 159 3 400 319 Assuming the shear area remains constant during the test, determine the effective cohesion and effective friction angle from these test results. What values of these parameters would you expect? Are the test results consistent with your expectations? What values would you use for design
A series of direct shear tests has been performed on a dense well-graded sand. All tests were performed on 3.00-in. diameter, 1.25 in. tall cylindrical samples, and were run slowly enough to produce drained conditions. The results of these tests are summarized in the following table: Test Number Normal Load (lb) Shear Load at Failure (lb) 1 100 84 2 200 159 3 400 319 Assuming the shear area remains constant during the test, determine the effective cohesion and effective friction angle from these test results. What values of these parameters would you expect? Are the test results consistent with your expectations? What values would you use for design
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A series of direct shear tests has been performed on a dense well-graded sand. All tests were performed on 3.00-in. diameter, 1.25 in. tall cylindrical samples, and were run slowly enough to produce drained conditions. The results of these tests are summarized in the following table:
Test Number Normal Load (lb) Shear Load at Failure (lb)
1 100 84
2 200 159
3 400 319
Assuming the shear area remains constant during the test, determine the effective cohesion and effective friction angle from these test results. What values of these parameters would you expect? Are the test results consistent with your expectations? What values would you use for design?
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